People visit the booth of China State Railway Group Co., Ltd. during the 2022 China International Fair for Trade in Services (CIFTIS) in Beijing, capital of China, on Sept. 1, 2022. The CIFTIS is held in Beijing from Aug. 31 to Sept. 5. (Xinhua/Li Xin)

An intelligent delivery vehicle is displayed at the 2022 China International Fair for Trade in Services (CIFTIS) in Beijing, capital of China, on Sept. 1, 2022. The CIFTIS is held in Beijing from Aug. 31 to Sept. 5. (Xinhua/Ren Chao)

People watch a sand table model of the Workers' Stadium at the Achievement Exhibition of China's Trade in Services during the 2022 China International Fair for Trade in Services (CIFTIS) in Beijing, capital of China, on Sept. 1, 2022. The CIFTIS is held in Beijing from Aug. 31 to Sept. 5. (Xinhua/Hao Zhao)

Photo taken on Sept. 1, 2022 shows the booth of Sinopharm during the 2022 China International Fair for Trade in Services (CIFTIS) in Beijing, capital of China, on Sept. 1, 2022. The CIFTIS is held in Beijing from Aug. 31 to Sept. 5. (Xinhua/Ren Chao)

Photo taken on Sept. 1, 2022 shows the Achievement Exhibition of China's Trade in Services during the 2022 China International Fair for Trade in Services (CIFTIS) in Beijing, capital of China. The CIFTIS is held in Beijing from Aug. 31 to Sept. 5. (Xinhua/Hao Zhao)

A robot is displayed at the Achievement Exhibition of China's Trade in Services during the 2022 China International Fair for Trade in Services (CIFTIS) in Beijing, capital of China, on Sept. 1, 2022. The CIFTIS is held in Beijing from Aug. 31 to Sept. 5. (Xinhua/Ren Chao)

People watch a model of C919 aircraft at the Achievement Exhibition of China's Trade in Services during the 2022 China International Fair for Trade in Services (CIFTIS) in Beijing, capital of China, on Sept. 1, 2022. The CIFTIS is held in Beijing from Aug. 31 to Sept. 5. (Xinhua/Li Xin)

People listen to the introduction of a carbon accounting system at the booth of Ernst & Young (EY) during the 2022 China International Fair for Trade in Services (CIFTIS) in Beijing, capital of China, on Sept. 1, 2022. The CIFTIS is held in Beijing from Aug. 31 to Sept. 5. (Xinhua/Cai Yang)

People visit the Achievement Exhibition of China's Trade in Services during the 2022 China International Fair for Trade in Services (CIFTIS) in Beijing, capital of China, on Sept. 1, 2022. The CIFTIS is held in Beijing from Aug. 31 to Sept. 5. (Xinhua/Hao Zhao)

People experience 4K livestreaming at the booth of Alibaba during the 2022 China International Fair for Trade in Services (CIFTIS) in Beijing, capital of China, on Sept. 1, 2022. The CIFTIS is held in Beijing from Aug. 31 to Sept. 5. (Xinhua/Cai Yang)

A woman visits the Achievement Exhibition of China's Trade in Services during the 2022 China International Fair for Trade in Services (CIFTIS) in Beijing, capital of China, on Sept. 1, 2022. The CIFTIS is held in Beijing from Aug. 31 to Sept. 5. (Xinhua/Hao Zhao)

A visitor takes pictures of a sand table model of the Workers' Stadium at the Achievement Exhibition of China's Trade in Services during the 2022 China International Fair for Trade in Services (CIFTIS) in Beijing, capital of China, on Sept. 1, 2022. The CIFTIS is held in Beijing from Aug. 31 to Sept. 5. (Xinhua/Li Xin)

People visit the Achievement Exhibition of China's Trade in Services during the 2022 China International Fair for Trade in Services (CIFTIS) in Beijing, capital of China, on Sept. 1, 2022. The CIFTIS is held in Beijing from Aug. 31 to Sept. 5. (Xinhua/Li Xin)

Photo taken on Sept. 1, 2022 shows an unmanned delivery vehicle at the booth of Meituan at the 2022 China International Fair for Trade in Services (CIFTIS) in Beijing, capital of China, on Sept. 1, 2022. The CIFTIS is held in Beijing from Aug. 31 to Sept. 5. (Xinhua/Cai Yang)